Comment 15 for bug 459198

After updating Karmic I had to remove nolapic, maintaining noapic to get it to work (referring to comment #11).

I also had some trouble installing Broadcom wireless restricted drivers (it crashed and freezed on install) but I fixed it installing bcmwl-kernel-source ( $ sudo apt-get install bcmwl-kernel-source ).

I don't know how and if it's related to the module options I had to set and change above, just thought it was worth mentioning.